MODEL FOR THE UV LASER ABLATION OF POLYMERS IN THE LOW-FLUENCE LIMIT

被引：3

作者：

HESZLER, P ^{[1
]}

KISS, LB ^{[1
]}

TOROK, M ^{[1
]}

机构：

[1] JATE UNIV,INST EXPTL PHYS,H-6720 SZEGED,HUNGARY

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 05期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0038-1098(91)90697-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The mass density spectrum and its dependence on the fluence is calculated for the first shot at a very low fluence (far below the single shot ablation threshold). At a given mass of fragment the spectrum is a linear combination of power functions of the fluence. For repeated shots a random degradation of the upper monolayers develops which can be identified as a percolation phenomenon. Close to the percolation threshold (that is, close to the critical number of shots) the correlation length of "cracks" becomes macroscopic. This critical phenomenon leads to a catastrophe-like behaviour at a sufficient number of shots. This picture is in accordance with the so-called incubation effect observed in several experiments.

引用

页码：425 / 427

页数：3

共 14 条

[11] DETECTION OF NEUTRAL PRODUCTS FORMED DURING EXCIMER LASER ABLATION OF POLYIMIDE BY UV AND VUV LASER PHOTOIONIZATION MASS-SPECTROMETRY [J].